mirror of https://github.com/stretchr/testify.git
44 lines
1.1 KiB
Go
44 lines
1.1 KiB
Go
package is
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import (
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"bytes"
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"fmt"
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"runtime"
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"strings"
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)
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// decorate prefixes the string with the file and line of the call site
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// and inserts the final newline if needed and indentation tabs for formatting.
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// this function was copied from the testing framework.
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func decorate(s string) string {
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_, file, line, ok := runtime.Caller(3) // decorate + log + public function.
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if ok {
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// Truncate file name at last file name separator.
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if index := strings.LastIndex(file, "/"); index >= 0 {
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file = file[index+1:]
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} else if index = strings.LastIndex(file, "\\"); index >= 0 {
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file = file[index+1:]
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}
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} else {
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file = "???"
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line = 1
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}
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buf := new(bytes.Buffer)
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// Every line is indented at least one tab.
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buf.WriteByte('\t')
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fmt.Fprintf(buf, "%s:%d: ", file, line)
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lines := strings.Split(s, "\n")
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if l := len(lines); l > 1 && lines[l-1] == "" {
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lines = lines[:l-1]
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}
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for i, line := range lines {
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if i > 0 {
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// Second and subsequent lines are indented an extra tab.
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buf.WriteString("\n\t\t")
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}
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buf.WriteString(line)
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}
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buf.WriteByte('\n')
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return buf.String()
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}
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